Thing is, when you're composing prose in your native language, you don't generally parse it and re-parse it to figure out whether some term is "relevant", or re

Thing is, when you're composing prose in your native language, you don't generally parse it and re-parse it to figure out whether some term is "relevant", or requiring attention, or in an "alternative mood". A native speaker/writer isn't normally aware of the grammatical aspect of what they write; they know how they want the text to appear. Trying to force writers to instead overlay a layer of meta-meaning on their prose, so that the meaning is expressed both in the text and the markup, is a fool's errand. It's a bit like a programming system that requires the developer to express his meaning in both Forth and Python; it's just asking for an author to write text that directly contradicts the markup.